To grow or to store: Do plants hedge their bets? This project aims to resolve a long-standing question about the function of perennial plants: how much of the carbon taken up by photosynthesis is used immediately for growth, and how much is kept in reserve as insurance against future stress? This question is important to our understanding of how plants respond to stresses such as severe drought, and yet lack of data and theoretical modelling currently hampers our ability to answer it. By applyin ....To grow or to store: Do plants hedge their bets? This project aims to resolve a long-standing question about the function of perennial plants: how much of the carbon taken up by photosynthesis is used immediately for growth, and how much is kept in reserve as insurance against future stress? This question is important to our understanding of how plants respond to stresses such as severe drought, and yet lack of data and theoretical modelling currently hampers our ability to answer it. By applying novel data analysis and modelling tools to recent experimental results, the project plans to test hypotheses for how plants allocate carbon between growth and storage in response to stress. Insights from the project may underpin better management of Australia’s vulnerable ecosystems.Read moreRead less
Temperature sensitivity of soil respiration and its components. This project aims to demonstrate how temperate evergreen forests could buffer against climate change. Soil respiration returns around half the carbon taken up by forests to the atmosphere. This project will characterise and quantify how microbes and roots in soils depend on temperature and substrate supply, and so predict how rising temperatures and drought will affect forests as natural carbon sequestration sinks. This project will ....Temperature sensitivity of soil respiration and its components. This project aims to demonstrate how temperate evergreen forests could buffer against climate change. Soil respiration returns around half the carbon taken up by forests to the atmosphere. This project will characterise and quantify how microbes and roots in soils depend on temperature and substrate supply, and so predict how rising temperatures and drought will affect forests as natural carbon sequestration sinks. This project will resolve the roles of environmental drivers of soil respiration across forests; integrate mechanistic understanding of differing plant and microbial responses to temperature within a common modelling framework; and evaluate the implications of this knowledge in predictions of climatic impacts on terrestrial carbon cycling.Read moreRead less
Avoiding coral bleaching: investigation into the repair of damaged photosynthetic machinery in symbiotic algae (symbiodinium) within corals. Photosynthesis in symbiotic algae within corals is essential for a healthy alga-coral symbiotic relationship. This project will provide new insights into how symbiotic algae maintain higher photosynthetic performance in corals through elucidating the mechanism associated with the repair of photodamaged photosynthetic machinery.
The resilience of marine ecosystems and fisheries to climate change: exploring adaptation strategies. This project will underpin Australia's commitment to maintaining environmental biodiversity and sustainability in the face of climate change. The Fellowship investigates the consequences of climate change on marine plants and animals, harvested resources and ecosystem functioning by identifying vulnerable species and habitats. It will provide management advice on balancing biodiversity and econo ....The resilience of marine ecosystems and fisheries to climate change: exploring adaptation strategies. This project will underpin Australia's commitment to maintaining environmental biodiversity and sustainability in the face of climate change. The Fellowship investigates the consequences of climate change on marine plants and animals, harvested resources and ecosystem functioning by identifying vulnerable species and habitats. It will provide management advice on balancing biodiversity and economic output under climate change. This information is of immediate use to a range of stakeholders including national, state and local government agencies. With its focus on ecological, economic and social impacts, this project will put Australian scientists at the forefront of research on the adaptation of marine ecosystems to climate change.Read moreRead less
Reef Breath Testing (RBT): exhaled volatile-gas biomarkers of coral health. This Project aims to uncover volatile gas "fingerprints" of coral reef taxa and how they are diagnostic of healthy reef functioning over space and time. All organisms emit distinct volatile gases via physiological fine-tuning and signalling as their environments change. Whilst coral reef taxa and coral reefs are hotspots for volatile gas emissions, which gases are produced, when and why, is entirely unexplored. This proj ....Reef Breath Testing (RBT): exhaled volatile-gas biomarkers of coral health. This Project aims to uncover volatile gas "fingerprints" of coral reef taxa and how they are diagnostic of healthy reef functioning over space and time. All organisms emit distinct volatile gases via physiological fine-tuning and signalling as their environments change. Whilst coral reef taxa and coral reefs are hotspots for volatile gas emissions, which gases are produced, when and why, is entirely unexplored. This project unites a multidisciplinary team of experts to, for the first time, couple volatile gas assessment, metabolic physiology and functional genomics techniques to transform understanding of how key volatile gases underpin coral resilience to stress and disease, which is essential to improve coral reef ecosystem management.Read moreRead less
Understanding the mechanisms of thermal acclimation in the symbiotic algae (Symbiodinium) within cnidarian corals. Global warming is a major threat to coral reefs, contributing to devastating coral bleaching. This project will provide new insight into how coral reefs can respond to rising global temperature through clarifying the thermal acclimation mechanisms in corals using molecular techniques.
Coping with temperature extremes: morphological constraints on leaf function in a warmer, drier climate. This project will determine how hydraulic properties of temperate, evergreen leaves affect their capacity to cope with seasonal variation in temperature extremes. The results will enhance mechanistic understanding of temperature tolerance, and inform prediction of vegetation change in response to climate warming and increasing CO2 concentrations.
Fiddling while home burns: climate change and fiddler crabs. Climate change is already affecting many Australian animals, including fiddler crabs. This project will use extensive knowledge of fiddler crab biology to determine whether they can behaviourally compensate for the rapid changes that are occurring by using experiments and observations conducted under natural conditions in the mangroves of Darwin harbour.
Range dynamics and demographics of spatially structured populations under global change. Why are particular species present in some locations, but not others? This is a simple, fundamental ecological question, yet surprisingly, our answers on this point remain far from complete. Using an integrated, systems-based approach, we will determine the interplay between: (i) birth, death and movement rates, (ii) species interactions, and (iii) the constraints of the physical environment (temperature, ra ....Range dynamics and demographics of spatially structured populations under global change. Why are particular species present in some locations, but not others? This is a simple, fundamental ecological question, yet surprisingly, our answers on this point remain far from complete. Using an integrated, systems-based approach, we will determine the interplay between: (i) birth, death and movement rates, (ii) species interactions, and (iii) the constraints of the physical environment (temperature, rainfall, soil type), which determine the limits of species' ranges. Our models will provide Australian conservation managers with a novel, validated toolbox to explore the trade-offs, and synergies, inherent in trying to adapt to climate change and other stressors on biodiversity.Read moreRead less
Utilising innovative fishing technology to address key questions on the biology of Antarctic krill. Antarctic krill are an important species in the Southern Ocean supporting most of the Antarctic birds and mammals. A sustainable krill fishery is developing with krill products used in aquaculture and increasingly for human consumption. A new omega 3 krill oil industry has emerged and is rapidly expanding. The aim of the project is to predict the factors governing oil levels and the biochemical co ....Utilising innovative fishing technology to address key questions on the biology of Antarctic krill. Antarctic krill are an important species in the Southern Ocean supporting most of the Antarctic birds and mammals. A sustainable krill fishery is developing with krill products used in aquaculture and increasingly for human consumption. A new omega 3 krill oil industry has emerged and is rapidly expanding. The aim of the project is to predict the factors governing oil levels and the biochemical composition in krill which will help us understand growth, reproduction and recruitment. The research aims to also assess the possible effects of climate change on krill. Outcomes of this research aim to be used to manage the expanding krill fishery.Read moreRead less